feat: add remove command to delete downloaded songs from a playlist

[khushipy]

Title

feat: add remove command to delete downloaded songs from a playlist

Description

Added a new remove command that allows users to delete downloaded songs from a Spotify playlist. The implementation includes:

• New remove.py console command handler
• Integration with the existing downloader system
• Support for removing multiple tracks at once
• Proper error handling and user feedback

Related Issue

Closes #2382

Motivation and Context

This feature was requested by users who want to manage their downloaded music library directly from the command line. It provides a convenient way to remove songs that are no longer needed, helping users save disk space.

How Has This Been Tested?

• Tested with various playlist sizes (small, medium, large)
• Verified file deletion from the filesystem
• Tested error cases (invalid paths, missing files, permission issues)
• Confirmed proper cleanup of metadata

Types of Changes

• New feature (non-breaking change which adds functionality)

Checklist

• My code follows the code style of this project
• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have read the CONTRIBUTING document
• I have added tests to cover my changes
• All new and existing tests passed

Hacktoberfest

• This PR is for Hacktoberfest 2023
• I have read the Hacktoberfest guidelines